Home / 455,139.60-682,709.40-231,190.80

Finding the Fourth Proportional to 455,139.60, 682,709.40 and 231,190.80

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Solution

The fourth proportional to 455,139.60, 682,709.40 and 231,190.80 is: 346,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,139.60 : 682,709.40 = 231,190.80 : x
  2. Step 2: Convert to fraction form
    455,139.60/682,709.40 = 231,190.80/x
  3. Step 3: Cross multiply
    455,139.60x = 682,709.40 × 231,190.80
  4. Step 4: Simplify right side
    455,139.60x = 157,836,132,353.52
  5. Step 5: Solve for x
    x = 157,836,132,353.52/455,139.60
  6. Step 6: Final answer
    x = 346,786.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.